Digital Resource Centers

Selected Photographs of the Civil War
Valley of the Shadow
Documenting the American South
The Digital History Project
History Matters
History Tours
Pennsylvanians in the Civil War
Civil War era collections at Gettysburg College
PBS: Reconstruction - The Second Civil War

Other Sites of Interest

The American Civil War Homepage
Pennsylvania in the Civil War Site
Gilder Lehrman Institute of American History
Civil War Interactive
Civil War Home
The History Place -- U.S. Civil War
Top 10 Costliest Battles of the Civil War
Battle Statistics, Commanders and Casualties
USS Monitor Story
Civil War Naval Museum
Guide to Civil War Records in Florida

Photographs

Gardner's Photographic Sketchbook of the War
Last Lincoln Photograph
Photographic History of the Civil War in 10 Volumes
Mathew Brady photos on Flickr

Primary Sources

Civil War Women: Primary Sources on the Internet
American Civil War Collection at the Electronic Text Center
Rare Map Collection -- The American Civil War
eHistory at OSU
U.S. Civil War Era
Civil War Maps - from the USAMA
Gilmer Civil Map Collection
Library of Congress maps of the Civil War
Fox's Regimental Losses
Civil War era Newspapers from Penn State
Civil War Diaries from the Iowa Digital Library
Civil War Resources from the VMI Archives
John Tenniel's Civil War Cartoons
At Gettysburg, or, What a Girl Saw and Heard of the Battle. A True Narrative. By Mrs. Matilda "Tillie" Pierce Alleman (1848-1914).
Civil War Letters

Underground Railroad / Slavery

Free Soil & Slavery Expansion
Pathway to Freedom -- Maryland and the Underground Railroad
The Underground Railroad -- by National Geographic
Geography of Slavery in Virginia
Abolition, Anti-Slavery, and the Underground Railroad -- Historical Society of Pa
Voices from the Days of Slaves -- Library of Congress
The Underground Railroad: Escape from Slavery -- Scholastic
Underground Railroad Digital Classroom
Slavery and Abolition in the US